1 files changed, 6 insertions, 0 deletions
diff --git a/video/out/opengl/video.c b/video/out/opengl/video.c
index 49b99e90b5..b9764063c0 100644
--- a/video/out/opengl/video.c
+++ b/video/out/opengl/video.c
@@ -1509,6 +1509,12 @@ static bool szexp_lookup(void *priv, struct bstr var, float size[2])
     struct szexp_ctx *ctx = priv;
     struct gl_video *p = ctx->p;
 
+    if (bstr_equals0(var, "NATIVE_CROPPED")) {
+        size[0] = (p->src_rect.x1 - p->src_rect.x0) * p->texture_offset.m[0][0];
+        size[1] = (p->src_rect.y1 - p->src_rect.y0) * p->texture_offset.m[1][1];
+        return true;
+    }
+
     // The size of OUTPUT is determined. It could be useful for certain
     // user shaders to skip passes.
     if (bstr_equals0(var, "OUTPUT")) {